Accused man's mother and brother 'led police' to national park where Stephanie Scott's body was found

The burned body police believe to be that of slain schoolteacher Stephanie Scott is set to be formally identified today or tomorrow, as new details emerge about how the remains were discovered.

9NEWS understands the police were led to the national park where the body was found by the mother and brother of the man accused of Scott's murder.

The man, a 24-year-old cleaner at the school Scott taught at, is believed to have gone camping in the same national park, about 70km from Scott's home town of Leeton.

Scott's body is set to undergo forensic testing in a Sydney morgue with more details about her death expected to emerge soon.

Scott went missing days before she was due to be married yesterday and her shocking death has left a community in mourning.

Her fiance Aaron Leeson-Woolley was unable to speak at her memorial yesterday, but was supported by friends as he released a bunch of yellow balloons into the sky.

Superintendent Michael Rowan said the female body found in Cocoparra National Park, near Griffith, at 5pm yesterday afternoon was "certainly" Ms Scott, however a formal identification will take some time.

A source said police believe Ms Scott was dead before she reached the bushland.

Superintendent Michael Rowan said the female body found in Cocoparra National Park, near Griffith, at 5pm yesterday afternoon was "certainly" Ms Scott, however a formal identification will take some time.

A source said police believe Ms Scott was dead before she reached the bushland.

It was five days after the English and drama teacher was last seen at Leeton High School, where the man accused of murdering her worked as a cleaner.

As friends, family and complete strangers descended on a memorial picnic dressed in yellow on Saturday, her family sought some comfort knowing they had found "Scotty".

"Unfortunately she was taken away from us for a short time but now we have her back and we will restore her dignity," her father Robert Scott vowed.

"That is most important to our family and it will also assist those of us to deal with this tragedy."

Standing with his wife and Scott's mother, Merrilyn, and siblings, Mr Scott spoke with composure as he asked Leeton to hold on to the memory of his "bubbly, bright, fun-loving" daughter.

"Tragedies happen, we can't change that, we can't deal with it any better than we have," he said.

"We do know we had a great girl and we are going to continue to remember her for what she was."

Mr Scott was touched by the reports of residents hanging their wedding dresses on their front doors on Saturday in respect for his daughter.

Among the crowd were students, present and former, including Matt Murphy, who had Ms Scott as a year 11 English teacher.

"We do know we had a great girl and we are going to continue to remember her for what she was."

Mr Scott was touched by the reports of residents hanging their wedding dresses on their front doors on Saturday in respect for his daughter.

Among the crowd were students, present and former, including Matt Murphy, who had Ms Scott as a year 11 English teacher.

"She was probably the nicest lady you've ever met," said.

The poignant memorial came after police found a gasoline can on Friday alongside an iPad - believed to belong to Ms Scott - after a search of a irrigation canal outside of town.